Using the ddboost ost plugin from Data Domain in conjunction with Netbackup moves the metabase comparisons from the data domain appliance to the media server. This dramatically reduces the amount of backup traffic being sent to the data domain and speeds up the backups considerably.
We looked at NBU 7's built in dedupe and saw ok numbers on small file, OS type backup data but for applications like exchange where we currently store around 40 full copies in 1.8TB of space on our data domains, we couldn't get 4 copies in the same amount of space using netbackup's dedupe. The fixed block dedupe algorithm of netbackups built in dedupe cannot handle large files as well as the variable block compression algorithms of the data domain. Also.. from a licensing point of view we worked out it was essentially $1000 per TB to license dedupe in Netbackup (Enterprise disk option and dedupe is licensed per TB). This is something you have to factor in, especially if you have a large environment. Replication of this backed up data is something else you'd need to devise a solution for. With data Domain, the replication part is easy. Mark Glazerman Desk: 314-889-8282 Cell: 618-520-3401 please don't print this e-mail unless you really need to -----Original Message----- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of stefanos Sent: Wednesday, August 25, 2010 3:02 AM To: 'Travis Kelley'; judy_hinchcli...@administaff.com; cal...@kforce.com; veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Question for NetBackup 7.0 Dedup user ORData Domain users The big difference between DataDomain (and all appliances) and nebackup deduplication option is that netbackup can do the process on the client. This will speed up the time of the backup. With DD and netbackup media server deduplication, nothing will change at your backup time, as all your data will travel to the media server. Do not listen to the companies about the deduplication ratio. Your data is unique, and nobody can predict the ratio. Ask for a demo from both companies. -----Original Message----- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Travis Kelley Sent: Wednesday, August 25, 2010 12:38 AM To: judy_hinchcli...@administaff.com; cal...@kforce.com; veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Question for NetBackup 7.0 Dedup user OR Data Domain users Data domain also has a limit to the amount of data one of their units can track but its fairly high. If you need more than 32TB of deduped data in PD you do need to deploy a seperate puredisk environment. Then PD just splits the hash space into chunks and stores data on whichever node it hases to. I'm not sure what their upper limit is but it can scale quite high also. On 8/24/10, judy_hinchcli...@administaff.com <judy_hinchcli...@administaff.com> wrote: > Remember that the built in de-dup as a limit on the amount of data it can > keep track of. > Over that amount you need to use a de-dup appliance. > > > From: veritas-bu-boun...@mailman.eng.auburn.edu > [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Alley, Chris > Sent: Tuesday, August 24, 2010 4:09 PM > To: veritas-bu@mailman.eng.auburn.edu > Subject: [Veritas-bu] Question for NetBackup 7.0 Dedup user OR Data Domain > users > > We are looking to change our backups to a disk based deduplication solution, > and 2 of our options are to utilize NetBackup 7.0's built in dedupe (Client > and Media server) or to put a Data Domain box in. I wanted to see if I > could get some real world feedback on what you guys have been seeing in > terms of dedupe rates, performance, etc. For example Data Domain claims we > would only see about 5:1 dedupe rate using NetBackup, which seems quite a > bit lower than what I would expect....and of course they claim they would > get about 20:1. I realize that all data is different, which is why I have > hopes that several people will reply with what they are seeing. Thanks for > your time! > _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu